diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/math-tools/n1/textbook.fr.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/math-tools/n1/textbook.fr.md
index de771eaee..0cb2d69f5 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/math-tools/n1/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/math-tools/n1/textbook.fr.md
@@ -8,16 +8,6 @@ lessons:
       order: 1
 ---
 
----
-title: Brainstorming pour structurer une thème "Classical mechanics"
-published: true
-routable: true
-visible: false
-lessons:
-    - slug: brainstorming-123-classical-mechanics
-      order: 1
----
-
 #### Brainstorming pour structurer un thème "Classical mechanics" : niveau 1
 
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